Sand-molding apparatus



Patented Jan. 31, 1888,

s. J. ADAMS; SAND MOLDINGf-Al'PARIATUS.

(No Modell) N4 PETERS, mlhgmpmr. wilhlngwn. D. C.

UNirEfDf- STATES PATENT rrice.,

, s. JARvIs ADAMS, or rtr'rsBURG, PENNsYLvANIA.

SAND-MOLDINGAPPARATUS.

SPECIFICATION forming parl'. Of Letters Patent NO. 377,008, dated January' 31, 1888.

Application filed March 3l, 1987. Serial No. 233,7101'.- (No modell) .To al whom it may concern: Y

Be it known that I, S. JARvIs ADAMS, of Pittsburg, in the county ot Allegheny and State of Pennsylvania, have invented a new and useful Improvementin SandMolding Apparatus; and I do hereby declare the following to be a full, clear, and exact descriptionv thereof. y Y

My invention relates to the formation of sand molds, its object being to provide atlask -i'or forming said molds wherein the principle parts are, during the formation of the m'ld, iirmly secured together, and thesand mold,

when the patterns are removed therefrom, is

of the stripping plate or support extending,

across the base of the tlask in such manner as to support each individual pattern.l l i To these ends it consists,A generally, in the combinatiomwith the tlask,of a strippiugpiate formed with or permanentlyv secured to the ask and patterns extending vthrough the stripping-plate. y A

It also consists in forming through this stripping-plateA the cre'prints or seats forthe reception of the heads of the cores which enter the patterns formed. A To enable others skilled in rthe art to make and use my invention, I will describe the same more fully, referring to the accompanying drawings, in whichf t Figure 1 is a longitudinal section of a ilask containing patterns and illustrating my Yinvention. 4 manner of withdrawing the patterns fromthe flask. Fig. 3 is a like view 0f a mold finished ready for casting; and Figs. 4 and 5 are like views of otherforms of my invention, illustrating the manner in which it may be employed.

Theflasks shown in Figs. 1, 2,`and 3 are such as are generally employed in forming molds by the jarring process in the apparatus shown 5o in application for Let-ters Patentled by me February 9, 1886, Nol 191,'323, the flask,lwith part the jar t0 it.

Fig. 2 is a likeV View showing the thepatterns, being raised through theinedium A ofa rod,^a, which is connected to a reciprof eating rod operated from above, the flask being dropped upon a stationary block toim- Y The flask a has formed. withit or perma-'r nentlysecured theretoV the stripping-plate I),i this plate, extending across the base-ofthe iiask andfhaviug openings formed there/in, 6o y thrcugh which the pattern 0r patterns extend,

`the 'openings in the strippingplate fittingA f f' l n neatly around the patterns; aiithifilesrired,` as shown inthe drawings, the stripping-plate havingthepatterns c formed thereon to moldY the seats or cope-prints for centering the core-. heads of the cores wit-hin the same.,` flhepat-y terns d are secured to the pattern plate'or' bloeke, this block in said molding apparatus being .secured 4 by means'of setscrews e Aon 7.0 othersuch devices to the flask, andl the block forming the curved base to the combined flask.y and patternto receive thejars in theformation f of the mold. Where, however, the molds areV formed on the ordinary reciprocating jarring` 75V table, as covered in patents heretofore granted' tol me, this block or plate ve may be made lat and rest directly upon the jarring-table, and

in such case the stripping-plate b acts to hold the patterns and the` flask in proper relativ/e 8o line.' At the saine time Ywhen the asl is in'- verted after the formation of the mold, and'- while the patterns remain within'the mold, this strippingplate holds the patterns in line and prevents theirsagging' so as to press E5' against the walls of the mold' formed and inA jure it. t Y m l In forming molds with this apparatus the patterns are inserted Withinthe mold, and where the jarring apparatus described in my 9o Said application is employed thev pattern* plate or' block is secured to the flask, the resvervoir g placed on the flask, a proper amount` of sand fed thereto, and the apparatus secured tothe reciprocating rod of the jarring appa- ,95"

ratus, the flask, withfits patterns andthesand contained therein, being raised and dropped upon thejarringblock, so compacting the sand;y

The rod a is then disconnected from the reciprocating rod, the reservoir removed, and, if 10o desired, the patterns dropped outof the flask,

this being accomplished by loosening the con- Y nection between the patternfplate e and the flask and permitting the patterns to drop through the same, the rod a', which is preferably connected to the base-plate, acting as a further guide to the patterns as they drop out of the mold. A suitable bottom hoard, Z, is then placed upon the flask, and the flask containing the mold inverted, and the flask lifted off the mold by any suitable means, leaving the finished mold ready for the reception of the coresm,\vhieh fit within the seats n, formed for them by the patterns c, secured to the strip ping-plates, the molds being then ready for casting. During this operation the strippingplate formed with or permanently secured to the flask acts to hold the patterns and the flask in proper relative position and assistsin guiding the patterns out ot' the flask, supporting the sand as the patterns are Withdrawn, and in case the tlask is inverted when the patterns remain therein the stripping-plate prevents the sagging of the patterns and the injury of the mold thereby.

In Fig. 4 my invention is illustrated in molds where the seat n for the cope-print is formed by the main pattern, the 4patterns for the cope-print being thus made separate from the stripping-plate, which is formed with or permanently secured to the flask; and in this case the stripping-plate supports the pattern and holds it in proper line with the flask, as above described, acting also to guide the pattern during the first part ot' its removal from the mold, which is the most difficult part, the stripping-plate also supporting the sand as the pattern is withdraw n.

In Fig. 5 anotherforin ofniy invention is illustrated,in which theseat for the copepri nt forms partofthestripping-plate, a metal seat for the cope-print being thus provided, in which the relative position ofthe coreand mold depends not upon the seat formed in the sand,but upon a perfect seat formed in thestripping-plate. In this ease a flaring or other shaped seat, p, is formed on the outer face of the stripping-plate, and the pattern conforms to this seat When it is placed within the flask, the pattern being secured to the flask by set-screws, as above de` scribed, during the molding operation. After the mold is formed, the pattern is Withdrawn, exposing the metal seatp formed by the stripping-plate for the reception of the cope-print r of the core. When this form of' seat is em ployed, it is of course necessary that the flask remain around the mold during casting; but this is desirable in heavy work, and the metal seat insures a more perfect fitting of the eore within the mold-cavity.

By my invention I am thus enabled to center and support the pattern within the flask during the molding operation and to support the sand while the pattern is withdrawn by means of part ofthe tlask which is not liable to any movement whatever, even with heavy and rough wear. I am also enabled to retain the parts in the exact position desired, and at the same time to employ different shapes ot' patterns with the same flask, which could not be accomplished Where the patterns and the pattern-plate are formed permanent with the flask itself.

What I claim as my invention, and desire `to secure by LettersPatent, is

l. In sand-n'iolding apparatus, the combination of the tlask, the stripping-plate formed with or permanently secured to the flask, and the pattern extending through the strippingplate into the flask, substantially as and for the purposes set forth.

2.- In sand'molding apparatus, the Combination of the flask, the stripping-plate formed With or permanently secured to the tlask and adapted to form the seat or cope-print for the core-head ofthe core, and the pattern extending through the stripping-plate in the flask, substantially as and for the purposes set forth.

In testimony whereof I, the said S. .IARvIs ADAMS, have hereunto set my hand.

JARVIS ADAMS.

lVitnesses:

JAMES I. KAY, J. NEGLEY Cooke. 

